According to Illy, degassing proceeds over a period of weeks or even months. Even a small amount of gas could carry a strong scent.

But does the container seal when the internal pressure is less than or equal to the external pressure? One way you might try to test this is to place a small cup of warm water inside the container, close it, allow it to cool, and then see if you can hear an inrush of air when you open it (or disturb it).

As an aside, silicone airlocks are also marketed to home beer brewers and winemakers. A do-it-yourself approach is to buy one of those (they cost less than $5) and then use silicone adhesive to attach it to the jar of your choice.

That is a novel idea.. I had never considered that. (Not surprising since I don't brew my own beer)

I'll to try that out. But for now, my storage solution seems to work.

To me it sounds like this product "sort of" works. But I mean, if the ball moves around when it's disturbed then it stands to reason that if for some reason you have moved it and it's not 100% level, it could be detrimental to the beans you are storing because it would constantly be open? Just saying....

For example, You put it on a counter top, but for some reason your counter isn't level... (I have seen some whacked out counters before...)

I was looking for proper storage containers for bean and ground, saw someone on HulaDaddy mention Airscape canisters. Googled that then saw demo on SCG. Take a look... come in 32 & 64 ounce and have a valve that seems better than the BBB thing. Also several color choices. Their web site is PlanetaryDesign.us or can also purchase at ContainerStore.com

I think worrying about containers is fixing the wrong problem. If the goal is to have the freshest possible coffee, don't roast or buy more than you can use in a week or so. I pretty much just roast my own but when I last bought beans, it was 1/2 pound at a time. My roasted beans just go into a Mason type jar.

Hi, My name is Cheng S. Wu. This One Way Valve was I developed it. Thanks for be interested of this product.

Yes, The valve is working as you said. And we also sent this product to Intertek for testing. And the result is perfect. Which means it allows the air out and prevent the fresh air enters the container. (For testing report you can find it on my web site of www.coffee-buddy.com , The web site will start on next few days.)

I have been work on this valve for 4 years. We use the simple concept. It's simple but it works great. (It says simple, But it took me a long time. Because it still have a lot of issues need to figure out, How is the curve line inside. How big and what is the weight of the ball, How to production... A ton of problem need to solve. So it took me 4 years.)

The valve no need to replace. Because I use the best material for every things. The container, I used Polypropylene, Stainless Steel 304 and Ceramic. The valve, I used silicone which is the best safety material. And the inside ball, I use glass ball. All the material can be use forever. So the valve stated "No need to replace."

Below is my personal opinion. I like fresh coffee. I roasted my own coffee every week. (half Pound) Long time ago, I roasted coffee, I found the first day is not good, Even I can say it terrible, It had a very storng grassy smile. But the second day comes good. And the following days comes better and better. So I always put my coffee in my container for one day after then drink it.

Also I know roaster always put their roasted bean one day then packed. They call it de-gas. This is the same concept as my idea, The coffee bean need breath. The coffee bean need to oxided to release favour.

My suggestion, All the coffee lover, Take a try, Go to your local roaster and buy half pound or one pound coffee. Then put it into a soft bag or container with one way valve. Then taste every day. You will be exciting that coffee bring you so much fun.

Evan, interestingly, years ago I tried out those "pump the oxygen" out containers which pretty create a vacuum.I found my coffee actually aged FASTER...oil appeared on beans 3 days post roast that never made it to 2nd crack in the first place.I believe others corroborated. It's as if the vacuum "drew out" the oil. Weird to say, I realize.This is not to say this particular device you're messing with might not work perfectly, but I can purchase 100 1# 1 way valved bags for $20.I also do Mason jars for freezing.

I use these containers, Ive been planning to do my own test as well, but have been super busy over the holidays. I however am new to coffee & don't know much about the science, i figured I could leave an open bag of chips inside?

I have used lots of things to store coffee but for me, a zip lock freezer bag, remove as much air as possible without being mental about it, seal then store in the bottom of the freezer keeps coffee fresh for me over the course of a month that it takes me to go through 5 pounds.

I have used seal a meal vac sealing bags and machine, canning jars etc and for me, this is the least expensive and easiest and works as well or better than anything else. YMMV!

In real life, my name isWayne P.Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Hi, My name is Cheng S. Wu. This One Way Valve was I developed it. Thanks for be interested of this product.

Yes, The valve is working as you said. And we also sent this product to Intertek for testing. And the result is perfect. Which means it allows the air out and prevent the fresh air enters the container. (For testing report you can find it on my web site of www.coffee-buddy.com , The web site will start on next few days.)

I have been work on this valve for 4 years. We use the simple concept. It's simple but it works great. (It says simple, But it took me a long time. Because it still have a lot of issues need to figure out, How is the curve line inside. How big and what is the weight of the ball, How to production... A ton of problem need to solve. So it took me 4 years.)

The valve no need to replace. Because I use the best material for every things. The container, I used Polypropylene, Stainless Steel 304 and Ceramic. The valve, I used silicone which is the best safety material. And the inside ball, I use glass ball. All the material can be use forever. So the valve stated "No need to replace."

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